pull an update from cad that already fixes the issue -- automake 1.10+ uses an uppercase MKDIR_P so both upper and lower need to be subst'd.  this fixes sf bug 1732265 from davemicc.
pull an update from cad that already fixes the issue -- automake 1.10+ uses an uppercase MKDIR_P so both upper and lower need to be subst'd.  this fixes sf bug 1732265 from davemicc.

kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1